*{
    margin: 0;
    padding: 0;
    text-decoration: none;
}
.wrapper{
    position: relative;
}
.top{
    position: absolute;
    left: 50%;
    transform: translate(-50%,0%);
    width: 1040px;
    height: 45px;
    border: 1px solid red;
    text-align: center;
    background-color: #FF4400;
    color: white;
}
.title li{
    float: left;
    width: 15%;
    list-style: none;
    padding: 10px 5px;
    font-size: 20px;
}
.title>li>a{
    color: white;
}
.title>li>a:hover{
    color: yellow;
}
.research{
    border: 2px solid red;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(40%,180%);
    height: 32px;
    width: 350px;
}
input{  
    background:none;  
    outline:none;  
    border:none;
}
img{
    background-size:80px 80px;
    background-repeat: no-repeat;
}
.pro{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,12%);
    width: 1000px;
    height:1000px;
    background-color: #E5E5E5;
    /* border: 1px solid #E8E8E8; */
    padding: 20px;
}
/* .pro1{
    border: 1px solid red;
} */
.title .ch li{
    float: left;
    list-style: none;
    width: 15%;
    text-align: center;
    font-size: 16px;
}